Published August 2016
| Version v1
Journal article
Search for the lepton flavour violating decay μ+ → e+γ with the full dataset of the MEG experiment
Creators
- Baldini, A.M.1, 2
- Cerri, C.1, 2
- Dussoni, S.1, 2
- Galli, L.1, 2
- Grassi, M.1, 2
- Morsani, F.1, 2
- Pazzi, R.1, 2
- Raffaelli, F.1, 2
- Sergiampietri, F.1, 2
- Signorelli, G.1, 2
- Bao, Y.3
- Egger, J.3
- Hildebrandt, M.3
- Kettle, P.R.3
- Mtchedilishvili, A.3
- Papa, A.3
- Ritt, S.3
- Baracchini, E.4
- Bemporad, C.1, 5
- Cei, F.1, 5
- D'Onofrio, A.1, 5
- Nicolo, D.1, 5
- Tenchini, F.1, 5
- Berg, F.6, 3
- Hodge, Z.6, 3
- Rutar, G.6, 3
- Biasotti, M.7, 8
- Gatti, F.7, 8
- Pizzigoni, G.7, 8
- Boca, G.9, 10
- De Bari, A.9, 10
- Nardo, R.9, 10
- Simonetta, M.9, 10
- Cascella, M.11, 12, 13
- Cattaneo, P.W.10, 14
- Rossella, M.10, 14
- Cavoto, G.15, 16
- Piredda, G.15, 16
- Voena, C.15, 16
- Chiarello, G.12, 13
- Chiri, C.12, 13
- Corvaglia, A.12, 13
- Panareo, M.12, 13
- Pepino, A.12, 13
- De Gerone, M.8, 17
- Doke, T.18
- Fujii, Y.4
- Ieki, K.4
- Iwamoto, T.4
- Kaneko, D.4
- Mori, Toshinori4
- Nakaura, S.4
- Nishimura, M.4
- Ogawa, S.4
- Ootani, W.4
- Orito, S.4
- Sawada, R.4
- Uchiyama, Y.4
- Yoshida, K.4
- Grancagnolo, F.13, 19
- Tassielli, G.F.13, 19
- Graziosi, A.20, 15
- Ripiccini, E.20, 15
- Grigoriev, D.N.21, 22, 23
- Haruyama, T.24
- Maki, A.24
- Mihara, S.24
- Nishiguchi, H.24
- Yamamoto, A.24
- Ignatov, F.25, 26
- Khazin, B.I.25, 26
- Popov, A.25, 26
- Yudin, Yu.V.25, 26
- Kang, T.I.27
- Lim, G.M.A.27
- Molzon, W.27
- You, Z.27
- Zanello, D.27
- Khomutov, N.28
- Korenchenko, A.28
- Kravchuk, N.28
- Mzavia, D.28
- Renga, F.29, 30, 31
- Venturini, M.32, 33
- MEG Collaboration
- 1. INFN Sezione di Pisa, Pisa (Italy)
- 2. Pisa Univ. (Italy)
- 3. Paul Scherrer Institut PSI, Villigen (Switzerland)
- 4. ICEPP, The University of Tokyo, Tokyo (Japan)
- 5. Pisa Univ. (Italy). Dipt. di Fisica
- 6. Swiss Federal Institute of Technology ETH, Zurich (Switzerland)
- 7. Genoa Univ., Dipartimento di Fisica (Italy)
- 8. INFN Sezione di Genova, Genoa (Italy)
- 9. Pavia Univ., Dipartimento di Fisica (Italy)
- 10. INFN Sezione di Pavia, Pavia (Italy)
- 11. University College London, Department of Physics and Astronomy, London (United Kingdom)
- 12. Universita del Salento, Dipartimento di Matematica e Fisica, Lecce (Italy)
- 13. INFN Sezione di Lecce, Lecce (Italy)
- 14. Pavia Univ. (Italy)
- 15. INFN Sezione di Roma, Rome (Italy)
- 16. Rome Univ. ''Sapienza'' (Italy)
- 17. Genoa Univ. (Italy)
- 18. Waseda University, Research Institute for Science and Engineering, Tokyo (Japan)
- 19. Universita del Salento (Italy)
- 20. Rome Univ. ''Sapienza'', Dipartimento di Fisica (Italy)
- 21. Novosibirsk State University, Novosibirsk (Russian Federation)
- 22. Novosibirsk State Technical University, Novosibirsk (Russian Federation)
- 23. Budker Institute of Nuclear Physics, Russian Academy of Sciences, Novosibirsk (Russian Federation)
- 24. KEK, High Energy Accelerator Research Organization, Tsukuba, Ibaraki (JP)
- 25. Novosibirsk State University, Novosibirsk (RU)
- 26. Budker Institute of Nuclear Physics, Russian Academy of Sciences, Novosibirsk (RU)
- 27. University of California, Irvine, CA (US)
- 28. Joint Institute for Nuclear Research, Dubna (RU)
- 29. Rome Univ. ''Sapienza'', Dipartimento di Fisica, Rome (IT)
- 30. INFN Sezione di Roma, Rome (IT)
- 31. Paul Scherrer Institut PSI, Villigen (CH)
- 32. Pisa Univ., Scuola Normale Superiore (IT)
- 33. INFN Sezione di Pisa, Pisa (IT)
Description
The final results of the search for the lepton flavour violating decay μ+ → e+γ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009-2013 and totalling 7.5 x 1014 stopped muons on target are presented. No significant excess of events is observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(μ+ → e+γ) < 4.2 x 10-13 (90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date. (orig.)
Availability note (English)
Available from: http://dx.doi.org/10.1140/epjc/s10052-016-4271-xAdditional details
Identifiers
Publishing Information
- Journal Title
- European Physical Journal. C, Particles and Fields (Online)
- Journal Volume
- 76
- Journal Issue
- 8
- Journal Page Range
- p. 1-30
- ISSN
- 1434-6052
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 47106985
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BRANCHING RATIO; EXPERIMENTAL DATA; MUON NUMBER; MUONS PLUS; RADIATIVE DECAY; SYMMETRY BREAKING
- Descriptors DEC
- ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; DATA; DECAY; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; FERMIONS; INFORMATION; LEPTON NUMBER; LEPTONS; MATTER; MUONS; NUMERICAL DATA; PARTICLE DECAY
Optional Information
- Collaborations
- MEG Collaboration